1. PROGRAMMING MACHINE NC/CNC (BASIC)
BASIC COMPETENCE : WRITING PROGRAMME MACHINE NC/CNC

2. LEARNING OUTCOMES After the student get the material are able to :
Knowing code programming CNC to Lathe machine
Understand format write each code programming CNC lath
Write codes programming to piece of paper programme CNC correctly and suitable standard

3. CODE PROGRAMMING Code programming CNC
Code progromming is contens of letter and number
Letter code is used G, M, S, F, H, I, J, T, N, K, D, X,Y, Z,
Number code is used 0 until 9

4. FUNCTION G00 Instruction code CNC lathe is: G00: moving position
moving position is cutting move without shape
Programming format G00 is : N …. / G00 / X ….. / Z …

5. EXAMPLE FUNCTION OF G00

6. SHEET PROGRAM G00 N G (M) X (I) Z (K) F (L) (K) (T) 00 - 500 01 -40001
-400 02
M30

7. FUNCTION G01 G01: move interpolation linier with using
Used to move the line in the axis , or cutting make axle certain (move interpolation).
Programming format : N … / G01 / X± … / Z± … / F …

8. EXAMPLE CUTTING STRAIGHT
Depth of cuuting 0,2 mm
End position of chisel the same with start programme

9. EXAMPLE PROGRAMMING WITH FUNCTION G01
CNC programs with function G01 N G
(M) X
(I) Z
(K) F
(L) (K) (T) 00
-500 01
-1320 50 02
200 03
-600 04
300 05
500 06
1320 07
M30

10. EXAMPLE CUTTING OF INTERPOLATION LINIER

11. INTERPOLASI CIRCLE G02 AND G03
G02: Interpolasi circle dircetly to the clock
Input format :N … / G02/ X± … / Z± … / F …
G03: Interpolasi circle against the clock
Input format : : N … / G03/ X± … / Z± … / F …

12. INTERPOLASI CIRCLE G02 AND G03
Example:
G02 (clockwise) G03 (Counter clockwise)

13. SICLUS CUTTING THREAD: G78
Used to shive the thread path but make it longer with spindle
machine.
The order to : N … / G78 / X ± … / Z± … / K … / H …
Siclus the movement is:

14. SICLUS OF CUTTING THREAD: G78
Siclus 1 rapid move
Siclus 2 threading
Siclus 3 rapid move
Siclus 4 rapid move

15. SICLUS OF CUTTING THREAD: G78

16. EXAMPLE OF SICLUS THREAD CUTTING G78
EXAMPLES : N … / G78 / X 1780 / Z / K150 / H25

17. SICLUS FITTER LONGER: G84
Siclus long fitter: G84
1. G84 is a order to fitter with chisel thing
create siclus, contain is:
Siclus 1 : prepare cutting tool
Siclus 2 : fitting longer
Siclus 3 : fitting side
Siclus 4 : back to start point
2. Order format : N … / G84 / X ± … / Z± … / F … / H …

18. SICLUS OF LONG FITTER: G84

19. EXAMPLE OF LONG FITTER: G84

20. WRITING AND DECIDE ZERO POINT : G92
G92 is order to writing and decide zero point machine
to programming price absolute.
Format P rogramming: N … / G92 / X ± … / Z± …
To programming G92, price X is show diameters.
example :

21. WRITING AND DECIDED ZERO POINT : G92
Example : G92

22. FUNCTION M Function M Code M called help order
Code order letter M is code order to complete and help code G
Code M called help order
Code G called first order

23. Some code M and its meaning is which is a lot of used by
KODE M
Some code M and its meaning is which is a lot of used by
M00
- Turn of rotation main axis
Repairing mistake program.
To continue the program depress knob “START”
M03
Rotation main axis clockwise
M05
Stop rotation of main axis
M06
Cutter Change and compensation enumeration chisel
M17
Return to especial program
M30
Program finish
M99
Radian Center parameter for the circle 90 degree

24. REFERENCES
Tim Fakultas Teknik Universitas Negeri Yogyakarta (2004) Modul Memprogram Mesin CNC (dasar), Yogyakarta:Bagian Proyek Pengembangan Kurikulum
Windarto (2008) Teknik Pemesinan Jilid 2, Memahami Mesin CNC Dasar, Jakarta:Direktorat Pembina Sekolah Kejuruan.